I had ordered a couple of "RF Remotes" from the D* website to use in other rooms than where my HR20-700 is sitting. I'm trying to program them to operate the HR20, but cannot seem to. The enclosed booklet says use codes 00001 or 00002 for all D* Receivers. But after numerous attempts, neither of those codes seem to work. By the way--there was a little separate antenna in the box with the remotes also. I'm assuming I don't need this for the HR20?